Air contained in a rigid, insulated tank fitted with a paddle wheel, initially at 300 K, 2 bar, and a volume of 2 m³, is stirred until its temperature is 600 K. Assuming the ideal gas model for the air, and ignoring kinetic and potential energy, determine: (a) the final pressure, in bar. (b) the work, in kJ. (c) the amount of entropy produced, in kJ/K. Solve using: (1) data from Table A-22. (2) constant c, read from Table A-20 at 400 K.

Air contained in a rigid, insulated tank fitted with a paddle wheel, initially at 300 K, 2 bar, and a volume of 2 m³, is stirred until its temperature is 600 K. Assuming the ideal gas model for the air, and ignoring kinetic and potential energy, determine: (a) the final pressure, in bar. (b) the work, in kJ. (c) the amount of entropy produced, in kJ/K. Solve using: (1) data from Table A-22. (2) constant c, read from Table A-20 at 400 K.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.

Question

Air contained
in a rigid, insulated tank fitted
with a paddle wheel, initially at 300 K, 2 bar,
and a volume of 2 m³, is stirred until its
temperature is 600 K.
Assuming the ideal gas model for the air, and
ignoring kinetic and potential energy,
determine:
(a) the final pressure, in bar.
(b) the work, in kJ.
(c) the amount of entropy produced, in kJ/K.
Solve using:
(1) data from Table A-22.
(2) constant c, read from Table A-20 at 400 K.

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